"As more students come to school traumatized by living through fires, floods, and other extreme weather, teachers are being asked to do more than educate — they’re also acting as untrained therapists."

"Doomerism" isn't the issue. The issue is that kids are living through real shit and realizing that the adults around them are unable/unwilling to help/protect them when it's needed. Your suggestion to fight "doomerism" is going to appear as a continuation of that and break any remaining trust even further.

Hope can be a useful tool, but within the context of American schools it's more often a tool for gaslighting and control than meaningful change.